Hi all.

I have a stock of this cream that contains the following ingredients :

Water, Glycerin, Lanolin, Sorbitan Stearate, Cetyl alcohol, isopropyl myristate, polysorbate 60, Sorbic acid (preservative), Dimeticone.

I want to use this cream as a "base"..

1) I know that uncoated zinc mixes with water and coated does not.
I have the coated zinc oxide powder.
Is it possible just to mix some of the cream, with the zinc oxide (daily to precent oxidation) and using it as a sunscreen?

2) Will this cream mix with fat soluble vitamins?
What should i be aware off while mixing this base with fat soluble vitamins.
- my purpose is to make an retin-a serum, or an vitamin a serum and also an vitamin e + c serum.